While a supercharged V-6 Range Rover Evoque R may or may not be in the works, on the other side of the Jaguar-Land Rover house, the changes for the 2013 XJ are confirmed: it will drop the base normally-aspirated 5.0-liter V-8 model in favor of a supercharged V-6.
With 335 horsepower (340 metric horsepower) on tap, the 3.0-liter supercharged V-6 is about 50 horsepower short of the 5.0-liter V-8 it replaces, but it will significantly improve gas mileage, raising the base U.S. XJ to 25 U.S. mpg combined (in European tests) from the current XJ's EPA-rated 19 mpg combined, a gain of nearly 33 percent. Maximum torque is generated between 3,500 rpm and 5,000 rpm, the plateau sitting at 332 pound-feet. All models of the XJ are also upgraded from a six-speed automatic to a new eight-speed automatic from ZF.
Jaguar says the new supercharged V-6 can get the XJ (both normal and long-wheelbase) to 60 mph in just 5.7 seconds and on to an electronically limited top speed of 155 mph. Again, that's a tick off the current 5.0-liter model's 5.4-second time, but likely to be considered a fair trade for better mpgs by mileage-conscious buyers.
Other tweaks for the 2013 XJ include making the Meridian sound system, previously only available on the XJ Ultimate, available throughout the line. Revised infotainment systems add features and ease-of-use, including redesigned navigation, entertainment, and connectivity screens and features. A slightly revised suspension tune improves comfort across the XJ range. Most of these updates are also to be shared with the 2013 Jaguar XF.
While these changes have been announced by Jaguar's official global outlet, U.S.-market-specific changes haven't yet been released, so any of the above may be subject to change. The supercharged versions of the 5.0-liter V-8, however, remain unchanged for the 2013 model year even at the global level, so we expect them to stick around here as well.
For the full details, including a lot of diesel-flavored forbidden fruit, read on to page two for the official release.